Science news articles about 'gizzard stones'
Sands of Gobi Desert yield new species of nut-cracking dinosaur
... dinosaur is approximately 110 million years old, dating to the mid-Cretaceous Period. The quantity and size of gizzard stones in birds correlates with dietary preference. Larger, more ...Beaked, bird-like dinosaur tells story of finger evolution
... dinosaur possessed a fully developed beak. Its lack of teeth, short arms without sharp claws and possession of gizzard stones suggest that it was a plant-eater, though it is related ...